Pavement.



B. RANSOME.

PAVEMENT APPLICATION FILED MAR.29.1916.

L%%5 55 Patented May 8,1911

WITNESSES: IN VENTOR Arron Nays BERNARD RANSOME, 0F OAKLAND, CALIFORNIA.

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Specification of Letters Patent.

Application filed March 29, 1916. Serial No.'87,585.

To all whom it may concern:

Be it known that I, BERNARD RANsoMn, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Pavements, of which the following is a. specification.

This invention relates to pavements and more particularly to pavements constructed of wood or concrete and covered with a bituminous material.

Pavements or streets constructed in this manner are more or less unsatisfactory as the comparatively thin asphalt covering has a tendency, particularly in warm weather, to

creep and form successive waves or chuck holes which make it rough for traffic and disagreeable to travel upon.

The object of the present invention is to interpose between the wood or concrete and the asphalt covering a layer of expanded metal or similar material to form a key for the asphalt, thereby preventing the undesirable condition previously mentioned, and, furthermore, to provide means for rigidly securing the expanded metal directly to the wood or concrete base. Further objects will hereinafter appear.

' The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure l is 'aperspective view of a pave ment, showing the application of the invention.

Fig. 2 is a vertical cross ,section of the pavement, showing the several layers of metal from which the roadbed or pavement is constructed.

Fig. 3 is a perspective view, showing one form of expanded metal.

Referring to the drawings in detail, A. indicates a concrete base or filler extending between the curbings 2 of an ordinary street; 3 represents a suitable form of expanded metal covering adapted to be placed over the concrete base; and i an asphalt filler or covering for the expanded metal which forms the wearing surface for the roadbed or pavemerit,

The ordinary asphalt pavements now in use are more or less unsatisfactory as the comparatively thin asphalt covering has a tendency, particularly in warm weather, to

creep and form successive waves or chuck holes which makes it rough for traffic. This tendency of creepage or wave formation, as far as asphalt is concerned, is overcome in the present instance by the provision of the interposed expanded metal reinforcement, generally indicated at 3. The interstices in the fabric form key formations for the asphalt which thoroughly secures it against creepage.

One of the important features of the present invention is the provision of a plurality of downwardly turned tangs 6. These tangs are formed directly from the expanded metal by cutting same, as at 7, and turning one edge in a downward direction. The tangs are thus permitted to enter theconcrete, as shown at 8 in Fig. 2, thus permitting the metal reinforcement to be placed upon the concrete when this is fresh. The tangs entering the concrete will thus secure the metal reinforcement to the concrete when this becomes set.

While the invention is here shown in connection with a concrete roadbed, it is obvious that the expanded metal may be secured directly to a plank walk, such as is employed on bridges, by driving staples through the expanded metal to secure it in place or by sharpening the tangs 6 so that these may be driven into the wood. The asphalt covering may then be applied in the usual manner and is, as before described, held against creepage by the expanded metal reinforcement. The construction may also be usedto advantage in connection with tarred or graveled roofs and possibly for other applications. 7

While one form of expanded metal is here shown, it is obvious that this may be changed to suit conditions.

The materials and finish of the several parts of the pavement are such as the experience and judgment of the manufacturer may dictate.

I Wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims and that I do not wish to limit myself to the specific dcsign and construction here shown.

flaving thus described my invention, what if claim and desire to secure by Letters Patent is Patented May 1917,

l. The combination in a pavement of the 1 character described, of a base member of concrete, an expanded metal frame-Work,

lying edgewise upon saidbase, having cuts made at intervals, with the separated ends folded downward and driven into the base, and a covering of asphalt above and filling the interstices of the expanded metal.

2. A pavement including a base member of concrete, a surfacing member of asphalt.

and a connecting and holding member, composed of expanded metaL embedded in the Laaepee asphalt vertically on edge, said metal strips being separated at intervals and the ends folded downward, and driven into the concrete base.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses. v

BERNARD RANSOME.

itnessesz A. G. BEARD, W. R CHILDS. 

